package com.cskaoyan.utils.ad;

public class RandomUtils {

    public static String createBigSmallStrOrRandomNum(){
        StringBuilder str = new StringBuilder();
        for(int i = 0;i < 9;i++){
            int intVal = (int) (Math.random() * 58 + 65);
            if(intVal >= 91 && intVal <= 96){
                i--;
            }else {
                if (intVal % 2 == 0) {
                    str.append((char) intVal);
                } else {
                    str.append((int) Math.random() * 10);
                }
            }
        }
        return str.toString();
    }
}
